Paul,

Can I ask Joe a dumb question here? I'm working on a variant of a Cozy, as
Joe is, and was wondering if Joe has considered whether the change in the
airflow from the speed brake (just a belly board inserted into the airflow
midway down the fuselage bottom) is going to upset the cooling he's working
so hard to ensure. Does anyone have any data on that for running those P-51
style scoops under canard pushers?

I realize that the power is typically down when the landing/speed brake is
extended but had some concern that overheating the engine on final would be
bad thing to do and would limit options for fixing problems with an
approach.

Barry Gardner
Wheaton, IL

They usually cool too much on approach.

Paul Lamar

-Joseph Berki wrote:

The landing brake does impede the flow aft and does affect cooling.  With a
PSRU one could get the prop to turn slower than an A/C engine providing air
braking.  Some builders with auto engines are contemplating removal of this
system.  The only other purpose it serves is it keeps debris from hitting
the prop during taxi ops.

Joe Berki
Limo EZ
wing attachment

 
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